What is the time difference between HST and PST?

Pacific Standard Time (PST) is 3 hours ahead of Hawaii Standard Time (HST). HST uses a UTC offset of UTC-10, while PST uses UTC-7. For example, when it's 9:00 AM in HST, it's 12:00 PM in PST. Note that this difference may shift by one hour during daylight saving time transitions if PST observes DST. Use the conversion table above to see the exact time for each hour of the day.

How do I convert HST to PST?

To convert HST to PST, add 3 hours to the HST time. For example, 9:00 AM HST is 12:00 PM PST, and 5:00 PM HST is 8:00 PM PST. Keep in mind that during daylight saving time transitions, the offset between these timezones may temporarily change by one hour. You can also use the interactive converter above for quick, accurate results.

What time is it in PST when it's noon in HST?

When it's 12:00 PM (noon) in HST, it's 3:00 PM in PST. This is because PST is 3 hours ahead of HST. Similarly, when it's 6:00 PM in HST, it's 9:00 PM in PST. During daylight saving time transitions, these times may shift by one hour, so always verify the current offset. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours ahead is PST from HST?

PST is 3 hours ahead of HST. This means when it's 9:00 AM in HST, it's 12:00 PM in PST, and when it's midnight in HST, it's 3:00 AM in PST. The exact difference can vary by one hour during daylight saving time transitions. The conversion table above provides a complete hour-by-hour mapping.

Is PST ahead or behind HST?

PST is ahead of HST by 3 hours. Clocks in PST show a later time than HST, meaning the day starts earlier in PST relative to HST. For example, when it's morning in HST, it's later in the morning in PST. This gap may change by one hour during DST transitions.

Does HST observe daylight saving time?

No, Hawaii Standard Time does not observe daylight saving time. The UTC offset of UTC-10 remains the same year-round, making time conversions from HST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

Does PST observe daylight saving time?

Yes, Pacific Standard Time observes daylight saving time. During DST, the abbreviation changes to PDT and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard PST time. This means the UTC offset for PST shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your HST to PST conversions.

What is the best time to call from HST to PST?

The best time for a call between HST and PST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in PST during their work day, call between 6:00 AM and 2:00 PM your HST time. Avoid calling too early or late, as the 3 hours difference means your evening could be their late night. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

When does daylight saving time change in PST?

Daylight saving time transitions vary by year and region. Pacific Standard Time observes DST, which typically shifts clocks forward by one hour in spring ("spring forward") and back in fall ("fall back"). During these transition periods, the time difference between HST and PST may temporarily change by one hour, which can cause confusion for scheduled meetings or calls. It's important to double-check your conversions around transition dates, especially if the two timezones switch on different dates. Check our DST change calendar for exact transition dates in the current year.

Do HST and PST ever have the same time?

No, HST and PST never show the same time because their base UTC offsets are different. However, because PST observes daylight saving time and HST does not, the time difference between them changes by one hour during DST transitions. This means the gap narrows or widens depending on the season, but the two clocks never align. Always verify the current offset around DST transition dates to avoid scheduling errors.

HST to PST Converter

Convert Hawaii Standard Time to Pacific Standard Time. See the hour-by-hour conversion table below.

Timezone Details

Hawaii Standard Time

12:43 PM

Thursday, April 2, 2026

HST (UTC-10:00)

Pacific Standard Time

3:43 PM

Thursday, April 2, 2026

PDT (UTC-07:00)

Difference: +3 hours

HST DST: No

PDT DST: Yes (PDT)

24-Hour Overview

HST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

PDT — 24-hour overview

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

12a12a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

PST to HST EST to PST PST to EST PST to GMT GMT to PST PST to IST IST to PST PST to JST JST to PST

Cities in These Timezones

HST Cities

Honolulu

PST Cities

Los Angeles San Diego San Francisco Seattle Las Vegas

More Tools

Compare HST & PST Plan a Meeting (HST & PST)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Hawaii Standard Time on Wikipedia Pacific Standard Time on Wikipedia IANA Time Zone Database